thermal regulation

Different living organisms tide over very low or very high temperature conditions differently. For E.g., i) Encystment It involves the formation of a hard and chitinous protective coat called cyst, around the body. It is commonly seen in amoeba, euglena. ii) Hibernation (winter sleep) Some animals ..

>d) Increases the conductivity of the cardiac muscle and bundle of His thermal regulation Adrenaline secreted by the adrenal medulla of adrenal gland accelerates the rate of heart beat during emergency conditions. Noradrenaline increases the heart beat during normal condition. T..

>In the terrestrial environment the seasonal and daily fluctuations in temperature are varied and marked. The lowest temperature recorded for any land mass is - 70 o C (Siberia). Higher temperatures may like wise go often to 85 o C as in certain deserts at noon. The organisms which can tolerate ver..

Silicones are polymeric compounds containing Si-O-Si linkages. These have the general formula (R 2 SiO) n . These may be linear cyclic or cross-linked. These have very high thermal stability and are called high temperature polymers (R may be alkyl or phenyl group). The starting material f..